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'gotten ltems stmt .ffice.

I IMPROV'BD MGBHUI POR JOINTING STOVE PIPE;

@te rlgebule remmen tu in tiges etters atmt mh making part nf the same.

TO ALL WHOM .IT MAY CONCERN: l

Be it known that I, J. N. ADAMS, of Bloomfield, inthe county of Davis,and State of Iowa., have made a new and useful Improvement in Machinesfor Jointing Stove Pipe; and I do hereby declare the following to be a.full, clem',` and exact description of the nature, construction, andoperation of the same suicient to enable one skilled in the art to whichit'ppertains to construct and use the same, reference being had to theaccompanylin g drawing, which is made part of this specification, nnd-Figure 1 of which is a perspective view of my invention.

Figure is a. perspective view of modification of the adjustable holder.I

The improvement consist-s in a'device forA attachmentto a. swagingmachineto hold the section of stove pipe .while the end is being swagedinto the form of a screw.: to be attachedtonnother section or portionsimilar-ly furnished at the end by being screwed therein or thereto. iThe device consists of an arm to beattached at one end to the swagin'gmachine, the 'other end projecting beyond the sWage-rollers toV supportthe section of Vstove pipe in'such position that the end being presentedobliquely' to the rollers will have avthread impressed upon it insteadof a. circular groove and rib.

In the drawings, A is the end which is bolted tothe swage.; B are therolls of the swage; C the projecting arm, and D the support upon, andagainst which the stove pipe lies, the angle of its presentation to theswage-rollers being regulated by the screw E, or by the equivalentslotted rod and thumb-screw, iig. 2. It will be seen that if thesupporting device be so `adjusted as to hold the pipe parallel with theaxis of the rollers 'that a. circular groove and rib will beimpressedupon the pipe in a. plane at right angles to the axis of the pipe, butli if by means of the screw or slotted arm the supporting angle headjustedto one side, the pipe will rotate between the swage-rollsobliquely lto 'their axes, and the groove and rib be impressed upon themin a screw form. A- certain degree of correspondence is necessarybetween the ends of the pipes which are to be thus united, and

the means are' alorded by the capacity for adjustment for so regulatingthe 'pitches to make one screw the counterpart of another, which couldnot be so readil'yand correctly accomplished by merely holding' the pipein the hand in a. position obliquely to the axis of the swage-rolls. v

What I claim as new, and desire to secure by Letters Patent, is y'lhe'combination7 with the projecting arm C, of the l:Adjustable holderD E, substantially as and for the purpose described. y

J. N. ADAMS.

vVlitnesses:

SAML A. DYsoRT, E. W. TALLoRP.

